| | NB 50 – NB 1500 Type B110 without vacuum support ringType B111with internal vacuum support ringType B112with embedded vacuum support ring  Type
Number of arches
Support ring variant
Application: Power plants, plant construction, food processing, wastewater treatment plants, industrial facilities, e. g. to disconnect pipelines, on oscillating conveyor systems, on sieving machines Universal expansion joint with one arch | Design: | Hydrodynamic, single-arch rubber bellows
with sleeves for clamped fixing
Optionally with vacuum support ring | | Nominal diameters: | NB 50 to NB 1500, intermediate sizes possible | | Installation length: | = Installation gap + 2 x fixing width
Standard installation gaps L0 = 125 to 250 mm
Other installation gaps on request | | Fixing width: | Depends on pressure, nominal diameter and clamp design, at least 40 mm | | Pressure: | Depending on the nominal diameter and installation length up to 6 bar
Vacuum-proof up to 0.8 bar absolute, with vacuum support ring up to 0.05 bar absolute Design in accordance with Pressure Equipment Directive PED 97/23/EC | | Movement: | For axial, lateral and angular movements
For axial extension or vacuums, the expansion joint can be drawn from the pipeline (groove as needed at the pipeline end)
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| up to 100°C: | EPDM | Cooling water, hot water, seawater, acids, dilute chlorine compounds | Nylon fabric
Polyester fabric
Kevlar fabric
Glass fibre fabric
Steel mesh | | EPDM, Drinking water approved | Drinking water | | EPDM, beige, food grade | Foodstuffs | | EPDM, abrasion-resistant | Abrasive materials, Water-sand extraction | | EPDM, insulating | Electrical systems construction | | IIR | Hot water, acids, bases, gases | | CSM | Strong acids, bases, chemicals | | NBR | Oils, petrol, solvents, compressed air | | NBR, bright, food grade | Oil, fatty foods | | up to 80°C: | CR | Cooling water, slightly oily water, seawater | | up to 70°C: | NR | Abrasive materials | | up to 150°C: | HNBR | Oils, petrol, solvents, compressed air | | up to 180°C: | FPM | Corrosive chemicals, petroleum distillates | | up to 200°C: | Silicon (Q) | Air, saltwater atmosphere | | Silicon (Q), white, food grade | Foodstuffs, medical technology | | | | | PTFE lining: Permanently embedded against chemical attacks on the interior at the rubber bellows, available starting at NB 300.
Take the restriction of the listed movement into account! | | | | | | | Fastening clamps | Design: | Depending on pressure and the nominal diameter, endless clamp belt, screw thread belt, small clamps or hinge bolt clamps. At higher pressures, 2 adjacent clamps per fastening side | | Width: | | Endless clamp belt: | ¾“ | | Screw thread belt: | ½“ | | Small clamp: | depending on Ø: 9–12 mm | | Hinge bolt clamp: | depending on Ø: 18–30 mm | | | Materials: | | Endless clamp belt with screw lugs (tongs): | 1.7300 | | Screw thread belt with threaded screw lugs: | 1.4310 | | Small clamp, belt and housing: | 1.4016 (Screw steel galvanised) | | Hinge bolt clamp, belt and housing: | 1.4016 (Screw steel galvanised) | | Download Product description
Movement-tables (if available)
Planning help image | |
